6.8

CVE-2013-4206

Heap-based buffer underflow in the modmul function in sshbn.c in PuTTY before 0.63 allows remote SSH servers to cause a denial of service (crash) and possibly trigger memory corruption or code execution via a crafted DSA signature, which is not properly handled when performing certain bit-shifting operations during modular multiplication.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
PuTTY ≫ PuTTY Version 0.45
PuTTY ≫ PuTTY Version 0.46
PuTTY ≫ PuTTY Version 0.47
PuTTY ≫ PuTTY Version 0.48
PuTTY ≫ PuTTY Version 0.49
PuTTY ≫ PuTTY Version 0.50
PuTTY ≫ PuTTY Version 0.51
PuTTY ≫ PuTTY Version 0.52
PuTTY ≫ PuTTY Version 0.53b
PuTTY ≫ PuTTY Version 0.54
PuTTY ≫ PuTTY Version 0.55
PuTTY ≫ PuTTY Version 0.56
PuTTY ≫ PuTTY Version 0.57
PuTTY ≫ PuTTY Version 0.58
PuTTY ≫ PuTTY Version 0.59
PuTTY ≫ PuTTY Version 0.60
PuTTY ≫ PuTTY Version 0.61
PuTTY ≫ PuTTY Version 2010-06-01 Update r8967 SwEdition development_snapshot
Simon Tatham ≫ Putty Version <= 0.62
Simon Tatham ≫ Putty Version 0.53
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 2.48% 0.825
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
NIST 6.8 8.6 6.4
AV:N/AC:M/Au:N/C:P/I:P/A:P
CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer

The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.

http://lists.opensuse.org/opensuse-updates/2013-08/msg00035.html
http://secunia.com/advisories/54379
Vendor Advisory
http://secunia.com/advisories/54533
http://svn.tartarus.org/sgt/putty/sshbn.c?sortby=date&r1=9977&r2=9976&pathrev=9977
Patch
http://www.chiark.greenend.org.uk/~sgtatham/putty/wishlist/vuln-modmul.html
Vendor Advisory
http://www.debian.org/security/2013/dsa-2736
http://www.openwall.com/lists/oss-security/2013/08/06/11